| Versions | Hits | Percent | ||
|---|---|---|---|---|
| Windows | 63719595 | 80.2 % | ||
 | Windows XP | 25832594 | 32.5 % |  |
 | Windows Vista | 543 | 0 % | |
 | Windows (unknown version) | 9577 | 0 % | |
 | Windows NT | 14392 | 0 % | |
 | Windows ME | 3622 | 0 % | |
 | Windows Vista (LongHorn) | 11837412 | 14.9 % | |
 | Windows Mobile | 941 | 0 % | |
 | Windows 98 | 17062 | 0 % | |
 | Windows 95 | 1551 | 0 % | |
 | Windows 2008 | 25503573 | 32.1 % | |
 | Windows 2003 | 245659 | 0.3 % | |
 | Windows 2000 | 251804 | 0.3 % | |
 | Windows 3.xx | 865 | 0 % | |
| BSD | 24289 | 0 % | ||
 | OpenBSD | 1077 | 0 % | |
 | NetBSD | 297 | 0 % | |
 | FreeBSD | 22915 | 0 % | |
| Linux | 7999442 | 10 % | ||
 | Ubuntu | 4533235 | 5.7 % | |
 | Suse | 361114 | 0.4 % | |
 | Red Hat | 20669 | 0 % | |
 | Mandriva (or Mandrake) | 120282 | 0.1 % | |
 | Gentoo | 48275 | 0 % | |
 | Fedora | 256142 | 0.3 % | |
 | Debian | 137272 | 0.1 % | |
 | Centos | 41257 | 0 % | |
 | GNU Linux (Unknown or unspecified distribution) | 2481196 | 3.1 % | |
| Macintosh | 6968657 | 8.7 % | ||
 | Mac OS X | 6968530 | 8.7 % | |
 | Mac OS | 127 | 0 % | |
| Others | 646597 | 0.8 % | ||
 | Unknown | 622133 | 0.7 % | |
 | Sun Solaris | 15876 | 0 % | |
 | OS/2 | 3432 | 0 % | |
 | Symbian OS | 3098 | 0 % | |
 | Unknown Unix system | 1310 | 0 % | |
 | CPM | 337 | 0 % | |
 | Nintendo Wii | 183 | 0 % | |
 | Aix | 98 | 0 % | |
 | AmigaOS | 70 | 0 % | |
 | Sony PlayStation Portable | 35 | 0 % | |
 | RISC OS | 25 | 0 % | |